TRANSACTIONS

TRANSACTIONS

OF THE

HULL

GEOLOG ICAL

SOCIETY

THE GLACIAL CONTORTION NEAR SCALBY.

The photograph facing page 1 was taken in June, 1898, by Mr. J. T. Dyson of Hull, and printed for this Volume by Dr. Hollingworth and Mr. W. S. Parrish, represents a section on the Yorkshire Coast, half a mile north of Scalby Ness, near Scarborough. The cliff, which at this point faces the east, is 110 feet high, consists of 20 feet of the Upper Estuarine Series (Lower Oolite), surmounted by a sloping bank of Drift 90 feet thick. The Estuarine base of the cliff consists of beds of shale divided by thin bands of sandstone, level bedded and unbroken, with the exception of the uppermost sandstone band, which as the photograph clearly shows, is thrown into a sharp fold. Judging from the direction of the fold, the force which produced it, proceeded from a few degrees east of north. And taking into consideration also the superficial character of the contortion and that it is immediately overlaid by Glacial beds; the glacial origin of the disturbing force can scarcely be doubted. The umbrella in the left centre of the picture indicates the scale.